Kaidan sits next to 5 phonetic neighbors — Caden, Aidan, and Hayden are the closest matches by sound. Most share Kaidan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"son of Cadán, little battle"
"sunny, bright, cheerful"
"prosperous friend"
"my God is strength"
"man of prayer, full of goodness"
"from the town of Dax"
"hollow, vain (from Latin Cassius)"
"black, dark-featured"
"to descend"
"narrow, strait"
"noble excellence, virtue"
"anointed one who carries"
"invented modern name"
"farmer, earthworker"
"Yahweh saves"
"one who works with stored grain"
"from the tree stump clearing"
"joined, attached"
"the sparrow bird"
"to wander, to travel freely"
"natural, undomesticated"
Similar sound: These names share phonetic patterns with Kaidan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Kaidan.
Rhythm: Kaidan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.